The evolution of multicellular organisms allowed cell specialisation and cell replacement
According to the cell theory, living organisms are composed of cells
Organisms consisting of only one cell carry out all the functions of life in that cell
Surface area to volume ratio is important in the limitation of cell size
Multicellular organisms have properties that emerge from the interaction of their cellular components
Specialised tissues can develop by cell differentiation in multicellular organisms
Differentiation involves the expression of some genes and not others in a cell’s genome
The capacity of stem cells to divide and differentiate along different pathways is necessary in embryonic development and also makes stem cells suitable for therapeutic uses
